[Eeglablist] Rejecting/Interpolating bad channels, take 2

[Tarik S Bel-Bahar]

note that it is not recommended to interpolate bad channels before ICA,
unless you are planning ERP-only analyses.

we have also resorted, for the time being, to visually checking for the big
bad channels that are not caught by automated methods.





On Mon, Nov 14, 2011 at 12:00 PM, Stephanie Echols <sechols at uchicago.edu>wrote:

>  Dear EEGLAB users,
>
> I have a few questions regarding the rejection and interpolation of bad
> EEG channels. I'm having a similar issue to that of Andrew Hill posted on
> May 9th, 2011, in that I have a few extremely bad channels that survive the
> automatic channel rejection function, regardless of the threshold/method
> applied.
>
> Please see this image for an illustration:
> http://ccp.uchicago.edu/~sechols/BadChannel_ERP.bmp
> The rejected channels are highlighted in red, but channel 55, which is
> almost comically bad, is not rejected.
>
> I have tried to use the methods recommended in the thread of Andrew Hill
> et al.,, and none of them seem to "catch" this bad channel.
>
> It also doesn't appear to matter whether the data is epoched or not.
>
> Does anyone have any recommendations?
>
> Further, does anyone know if there is a way to reject these channels using
> code (as opposed to the Edit - Select Data function in the GUI), and
> interpolate them? Is there a way to do this in concert with the automatic
> channel rejection function, and save the bad channels rejected using both
> methods in one function?
>
> Thank you all for your time, I am new at this and would appreciate any
> advice you can offer!
>
> Best,
> Stephanie
>
>
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